From 1357 working glass cutting and shopkeeper In 1378 the first factory in Qom Tempered glass - using a vertical furnace In 1381 the first furnace operation took Lndgrs in Iran In 1388 the city of Qom in Iran Shokohieh second plant of tempered glass manufacturing company in China Tempered devices and devices equipped (CNN thirty-cutting machine and the largest machine Mkvtk Diamond Glass) Enter the operation and took